結果
問題 | No.765 ukuku 2 |
ユーザー | 37zigen |
提出日時 | 2020-04-22 04:49:15 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 2,560 ms / 3,000 ms |
コード長 | 4,433 bytes |
コンパイル時間 | 3,378 ms |
コンパイル使用メモリ | 79,144 KB |
実行使用メモリ | 60,192 KB |
最終ジャッジ日時 | 2024-04-18 10:13:59 |
合計ジャッジ時間 | 44,366 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 86 ms
43,056 KB |
testcase_01 | AC | 86 ms
42,972 KB |
testcase_02 | AC | 87 ms
42,684 KB |
testcase_03 | AC | 101 ms
42,808 KB |
testcase_04 | AC | 92 ms
42,940 KB |
testcase_05 | AC | 86 ms
42,656 KB |
testcase_06 | AC | 89 ms
42,888 KB |
testcase_07 | AC | 92 ms
42,936 KB |
testcase_08 | AC | 99 ms
43,056 KB |
testcase_09 | AC | 102 ms
42,740 KB |
testcase_10 | AC | 96 ms
42,936 KB |
testcase_11 | AC | 85 ms
42,504 KB |
testcase_12 | AC | 95 ms
42,996 KB |
testcase_13 | AC | 83 ms
43,256 KB |
testcase_14 | AC | 98 ms
42,836 KB |
testcase_15 | AC | 93 ms
43,036 KB |
testcase_16 | AC | 96 ms
42,924 KB |
testcase_17 | AC | 88 ms
42,944 KB |
testcase_18 | AC | 87 ms
43,132 KB |
testcase_19 | AC | 89 ms
43,048 KB |
testcase_20 | AC | 88 ms
42,768 KB |
testcase_21 | AC | 90 ms
43,004 KB |
testcase_22 | AC | 88 ms
42,680 KB |
testcase_23 | AC | 86 ms
42,924 KB |
testcase_24 | AC | 92 ms
42,884 KB |
testcase_25 | AC | 84 ms
43,016 KB |
testcase_26 | AC | 103 ms
42,752 KB |
testcase_27 | AC | 100 ms
42,748 KB |
testcase_28 | AC | 89 ms
43,244 KB |
testcase_29 | AC | 98 ms
43,320 KB |
testcase_30 | AC | 1,766 ms
56,284 KB |
testcase_31 | AC | 1,608 ms
58,160 KB |
testcase_32 | AC | 1,501 ms
59,348 KB |
testcase_33 | AC | 838 ms
59,908 KB |
testcase_34 | AC | 777 ms
60,148 KB |
testcase_35 | AC | 1,698 ms
59,980 KB |
testcase_36 | AC | 1,645 ms
60,192 KB |
testcase_37 | AC | 2,326 ms
59,780 KB |
testcase_38 | AC | 2,482 ms
58,664 KB |
testcase_39 | AC | 2,560 ms
58,788 KB |
testcase_40 | AC | 1,269 ms
59,896 KB |
testcase_41 | AC | 2,240 ms
57,840 KB |
testcase_42 | AC | 2,192 ms
57,820 KB |
testcase_43 | AC | 1,755 ms
58,016 KB |
testcase_44 | AC | 2,056 ms
59,588 KB |
testcase_45 | AC | 2,053 ms
57,844 KB |
testcase_46 | AC | 1,721 ms
56,700 KB |
testcase_47 | AC | 2,187 ms
58,144 KB |
testcase_48 | AC | 2,147 ms
55,444 KB |
testcase_49 | AC | 2,031 ms
55,396 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.math.BigInteger; import java.util.Arrays; import java.util.Comparator; import java.util.NoSuchElementException; public class Main { public static void main(String[] args) { new Main().run(); } final long[] MOD= {980000023,980000029}; //,980000033 long[][] ip26=new long[MOD.length][(int)3e5]; { for (int i=0;i<ip26.length;++i) ip26[i][0]=1; for (int i=0;i<MOD.length;++i) { long i26=inv(26,MOD[i]); for (int j=1;j<ip26[i].length;++j) ip26[i][j]=ip26[i][j-1]*i26%MOD[i]; } } long pow(long a,long n,long mod) { return n==0?1:(pow(a*a%mod,n/2,mod)*(n%2==1?a:1))%mod; } long inv(long a,long mod) { return pow(a,mod-2,mod); } // [l,r) long trim(int l,int r,long[] hash,int id,boolean to_left) { int n=hash.length; if (to_left) return ((r==0?0:hash[r-1])-(l==0?0:hash[l-1])+MOD[id])%MOD[id]*ip26[id][l]%MOD[id]; else return (hash[l]-(r==n?0:hash[r])+MOD[id])%MOD[id]*ip26[id][n-r]%MOD[id]; } int f(int l,int r,long[][] hash0,long[][] hash1){ int n=hash0[0].length; if (l<0||r>=n||l>r) return 0; int ok=0; int ng=Math.min(l+2, (n-1-r)+2); while (ng-ok>1) { int middle=(ok+ng)/2; boolean ret=true; for (int j=0;j<MOD.length;++j) { ret&=trim(l+1-middle,l+1,hash0[j],j,true)==trim(r,r+middle,hash1[j],j,false); } if (ret) ok=middle; else ng=middle; } return ok; } void run() { FastScanner sc=new FastScanner(); char[] cs=sc.next().toCharArray(); int n=cs.length; long[][] hash0=new long[MOD.length][n]; long[][] hash1=new long[MOD.length][n]; for (int i=0;i<MOD.length;++i) { long x=1; for (int j=0;j<n;++j) { hash0[i][j]=(j==0?0:hash0[i][j-1])+(int)(cs[j]-'a')*x; hash0[i][j]%=MOD[i]; x=x*26%MOD[i]; } x=1; for (int j=n-1;j>=0;--j) { hash1[i][j]=(j==n-1?0:hash1[i][j+1])+(int)(cs[j]-'a')*x; hash1[i][j]%=MOD[i]; x=x*26%MOD[i]; } } int ans=0; for (int i=0;i<n;++i) { if (ans>2*Math.min(i+1, n-i)) continue; int len=f(i,i+1,hash0,hash1); int even=2*len+2*Math.max(f(i-len-1,i+1+len,hash0,hash1),f(i-len,i+1+len+1,hash0,hash1)); len=f(i,i,hash0,hash1); int odd=2*len-1+2*Math.max(f(i-len-1,i+len,hash0,hash1),f(i-len,i+len+1,hash0,hash1)); if (odd==n) odd-=2; if (even==n) even-=2; ans=Math.max(ans,Math.max(odd, even)); } System.out.println(ans); } void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));} } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; }else{ ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { return (int)nextLong(); } }